import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.net.URL;

import javax.imageio.ImageIO;


public class PictureDemo {
     /** 
     * 將圖片進行合成 
     * @param bigPath 主圖圖片路徑 
     * @param
 
 smallPath 商品圖片路徑 
     * @param erweimaPath 二維碼圖片路徑 
     */  
    public static final void overlapImage(String bigPath, String smallPath,String erweimaPath) {  
        try {  
          BufferedImage big = ImageIO.read(new File(bigPath));  
          URL url = new URL("http://mjj.dapail.com/app/moneyUrl.png");   
          BufferedImage small 
 
= ImageIO.read(url.openStream());  
          BufferedImage erweima = ImageIO.read(new File(erweimaPath));  
          /*int width=2015;   
          int height=1136;*/
          int width=400;   
          int height=600;
          Image image=big.getScaledInstance(width, height, Image.SCALE_SMOOTH);  
          BufferedImage bufferedImage2
 
=new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);  
          Graphics2D g = bufferedImage2.createGraphics();  
         
         /* int x = 707;  
          int y = 268;  
          int x1 = 684;  
          int y1 = 245;*/
          
          int x = 200;  
          int y = 250;
          
          
          int x1 = 200;  
          int y1 = 250;
          
          
          g.drawImage(image, 0, 0,null);  
         // g.drawImage(small,x1-200, y1-250, 400, 200, null);
          //紅包
          g.drawImage(small, x, y+100, 50, 50, null); 
          
          
          //g.drawImage(erweima, x1-575, y1+100, 596, 596, null);
          //二維碼
          g.drawImage(erweima, x1-100, y1+80, 200, 200, null); 
          
          Font font=new Font("黑體",Font.PLAIN , 25);  
          g.setFont(font);  
          g.setPaint(Color.DARK_GRAY);  
          int numWidth =x-70;  
          int numHright=y+50;  
          int num=0;  
         // g.drawString("商品名稱:" , numWidth,numHright);   
          //g.drawString("測試棋牌室" , numWidth,numHright); 
          
          String name="測試測試測試測試試試";
          
          
          if (name.length()==2) {
              numWidth =x-20; 
          }
          else if(name.length()==3) {
              numWidth =x-35;  
          }else if(name.length()==4) {
              numWidth =x-50;  
          }else if(name.length()==5) {
              numWidth =x-65;  
          }else if(name.length()==6) {
              numWidth =x-75;  
          }else if(name.length()==7) {
              numWidth =x-90;  
          }else if(name.length()==8) {
              numWidth =x-105;  
          }
          else if(name.length()==9) {
              numWidth =x-115;  
          }
          else if(name.length()==10) {
              numWidth =x-130;  
          }
          else if(name.length()==11) {
              numWidth =x-145;  
          }
          else if(name.length()==12) {
              numWidth =x-160;  
          }
          
          g.drawString(name , numWidth,numHright); 
          
      /*    g.setPaint(Color.DARK_GRAY);  
          Font font1=new Font("宋體",Font.BOLD , 15);  
          g.setFont(font1);
          numWidth=numWidth-25;
          g.drawString("江蘇美聯信息科技有限公司" , numWidth,numHright+280); */  
          /*num += 50;   
          Font font2=new Font("宋體",Font.PLAIN , 40);  
          g.setFont(font2);  
          g.setPaint(Color.DARK_GRAY);  
          g.drawString("原產地:", numWidth, numHright+num);   
          num += 50;    
          g.drawString("配送方式:",numWidth, numHright+num); */  
          g.dispose();  
          ImageIO.write(bufferedImage2, "jpg", new File("E:/20170429/2017410備份/TestImage/4.jpg"));  
        } catch (Exception e) {  
          e.printStackTrace();  
        }  
      }  
      public static final void main(String[] args) {  
        overlapImage("E:/20170429/2017410備份/TestImage/bg.png", "E:/20170429/2017410備份/TestImage/2.png","E:/20170429/2017410備份/TestImage/2.png");  
      }  
  
  
}

JAVA------20.圖片中插文字和圖片